Latest / Behavioral Economics with Fexingo: Decision Making, Bias, and How People Really Spend / How The Decoy Effect Distorts Your Investment Judgments
Transcript
- Lucas: If you have ever bought a medium popcorn at the movies only to realize later that the large was barely two dollars more, you have been victimized by the decoy effect. It is one of the most reliable tricks in behavioral economics because it does not change the value of the options; it only changes how they compare to each other. Luna: Right, and it feels like a win when you pick the larger size, even though you would have been happier keeping the cash if there was no third option staring you in the face. Lucas: Exactly. The classic experiment comes from Dan Ariely's research where they offered three subscriptions: digital only for fifty-nine dollars, print only for one hundred twenty-five dollars, and both for one hundred twenty-five dollars. Everyone chose the bundle because it looked like a steal compared to the print-only option, which was essentially a decoy designed to make the bundle look superior. Luna: So the decoy is not meant to be chosen; it is just there to tilt the scale toward the target product the seller actually wants to move. Lucas: Precisely. And while we usually see this in retail, I want to talk about how it is actively shaping investment decisions right now, especially with the way mutual funds and exchange-traded funds are structured in the current market environment of October twelfth, twenty twenty-six. Luna: I have seen this in my own brokerage app. You scroll through bond funds or balanced ETFs and suddenly there is a middle ground option that seems reasonable but is clearly priced to push you toward the higher fee tier. Lucas: It happens constantly in fixed income. Let us say you are looking at three corporate bond funds. Fund A has a low fee and moderate returns. Fund C has high fees and slightly better historical performance. Then Fund B appears. It has high fees like Fund C but mediocre returns that sit awkwardly between A and C. Luna: So Fund B makes Fund C look like a smarter buy because the extra fee buys you better performance relative to the decoy, even though Fund A might be the actual efficient choice. Lucas: That is the mechanism. Investors focus on the attributes they can easily compare, like expense ratios and past yields, rather than the underlying risk profile. The decoy creates an illusion of dominance that distracts from the fact that the premium product is overpriced for what it actually delivers. Luna: It is fascinating because it relies on our brains being lazy. We do not want to calculate the true internal rate of return; we just want to feel like we picked the best option in the lineup. Lucas: And this laziness is exploited by financial advisors who present portfolios in specific ways. If you ask for three options, they will almost always give you a bad one, a mediocre one, and a good one that costs more. The mediocre one is the decoy that makes the expensive one look justified. Luna: So if you remove the decoy, does the expensive option still look like a good deal? Or does it suddenly seem too pricey? Lucas: Usually, it looks too pricey. When you strip away the artificial comparison, you are forced to evaluate the product on its own merits. And in many cases, the cheaper, simpler option is the one that aligns better with your long-term goals. Luna: This reminds me of the streaming service wars. They used to offer a basic plan, a standard plan, and a premium plan. The standard plan was often the decoy designed to make the premium plan look like the obvious upgrade. Lucas: Yes, and companies are shifting those structures constantly as they learn what works. But in finance, the stakes are higher because the decisions are less frequent and the consequences compound over decades. A small fee difference driven by a decoy effect can cost you tens of thousands of dollars over thirty years. Luna: Which means recognizing the pattern is half the battle. Once you know the decoy is there, can you trust your own judgment again? Lucas: You have to actively resist the pull. One trick is to evaluate each option independently before comparing them. Ask yourself if you would buy Fund C if Fund B did not exist. If the answer is no, then the decoy worked, and you should walk away. Luna: That is a simple but powerful filter. It forces you to look at the intrinsic value rather than the relative appeal. Lucas: Another angle is to look at the total cost of ownership. In investing, that includes taxes, trading costs, and time spent monitoring. Often, the decoy option requires more active management or triggers higher tax liabilities, which erodes the perceived advantage. Luna: I never think about the tax implications when I am just looking at the headline yield. The decoy hides those hidden costs behind the glamour of the bigger number. Lucas: Exactly. And it is not just funds. It happens with insurance policies, retirement annuities, and even crypto staking products. Anytime you see a trio of choices where one is clearly inferior, assume someone is using it to steer you somewhere else. Luna: So the takeaway is to question the lineup itself. Why are these three options presented together? What is the seller trying to hide by making one look so bad? Lucas: Spot on. The goal is to break the frame. If you can step outside the structure they built for you, you regain control of the decision. It is not about being smarter than the marketer; it is about refusing to play their game. Luna: I love that. It shifts the power back to the listener. You stop reacting to their cues and start setting your own terms. Lucas: Before we go further into how this applies to individual stock picking, I want to mention something real about how this show operates. A small group of listeners already supports us monthly through buy me a coffee dot com slash fexingo, and that revenue is literally what keeps us ad-free and allows us to produce these deep dives every single day. Luna: Yeah, it really helps. Knowing that the community backs this directly means we can focus on quality research instead of chasing clicks or sponsors. Lucas: If you have found value in our breakdowns of market mechanics, consider joining them. It takes ten seconds and it directly fuels the work you are listening to right now. Luna: Thanks for keeping this independent. Now, let us get back to stocks. Lucas: The decoy effect also creeps into equity selection when analysts present peer groups. Imagine you are choosing between three tech giants. Company X is steady with low growth. Company Z is volatile with high growth. Then Company Y enters the chat with moderate growth and moderate volatility. Luna: Company Y becomes the safe middle ground, even if Company X is actually undervalued or Company Z is the true long-term winner. Lucas: Exactly. Analyst reports often highlight the 'average' performer to make the high-risk/high-reward option look either too dangerous or too exciting. They use the middle stock to anchor your expectations, making the extremes look extreme by comparison. Luna: So if you ignore the median stock entirely, you might find that the outlier is actually the rational choice for your risk tolerance. Lucas: Or you might find that neither is worth your time, and cash or bonds are the better alternative. The decoy makes staying invested feel mandatory, even when the assets are flawed. Luna: It is scary how much influence these subtle frames have on our net worth. We think we are making logical choices, but we are just responding to the layout of the menu. Lucas: The solution is to audit your portfolio periodically and ask if any of your holdings were selected because they fit neatly into a comparison set. If you can trace your decision back to a decoy, it is time to reconsider. Luna: I am going to start doing that immediately. It is a fresh way to look at due diligence that goes beyond just reading the balance sheet. Lucas: And it adds a layer of psychological safety to your investments. You are not just protecting your capital from market swings; you are protecting it from your own cognitive biases. Luna: That is a powerful distinction. So next time you see a perfect trio of options, remember the popcorn. Ask yourself who is really getting the better deal. Lucas: Most likely, it is the person who sold you the ticket.